EP0230695B2 - Plattenförmiger Informationsträger mit einem Einsatzstück das ein zentrales Loch besitzt - Google Patents

Plattenförmiger Informationsträger mit einem Einsatzstück das ein zentrales Loch besitzt Download PDF

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Publication number
EP0230695B2
EP0230695B2 EP86202331A EP86202331A EP0230695B2 EP 0230695 B2 EP0230695 B2 EP 0230695B2 EP 86202331 A EP86202331 A EP 86202331A EP 86202331 A EP86202331 A EP 86202331A EP 0230695 B2 EP0230695 B2 EP 0230695B2
Authority
EP
European Patent Office
Prior art keywords
information carrier
insert piece
bore
present
disc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86202331A
Other languages
English (en)
French (fr)
Other versions
EP0230695A1 (de
EP0230695B1 (de
Inventor
Antonius Van Poorten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CAMBIO RAGIONE SOCIALE;GPT AXXICON B.V.
Original Assignee
GPT Axxicon BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GPT Axxicon BV filed Critical GPT Axxicon BV
Priority to AT86202331T priority Critical patent/ATE70140T1/de
Publication of EP0230695A1 publication Critical patent/EP0230695A1/de
Application granted granted Critical
Publication of EP0230695B1 publication Critical patent/EP0230695B1/de
Publication of EP0230695B2 publication Critical patent/EP0230695B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
    • G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
    • G11B23/0028—Details
    • G11B23/0035—Details means incorporated in the disc, e.g. hub, to enable its guiding, loading or driving

Definitions

  • the invention relates to a round disc-shaped information carrier having a bore at the center of it, in combination with an insert piece comprising a generally cylindrical part extending through the bore and substantially contacting the entire inside edge of the bore, the combination being adapted to be rotated, in a recording and/or reproducing apparatus by drive means having a spindle on which the information carrier is clamped, said spindle snugly fitting in in a bore present in the insert piece.
  • WO 84/04839 and DE-A-3 441 521 both relate to a combination of a round disc-shaped information carrier in combination with an insert piece as defined herein above.
  • US-A-2 806 704 discloses a gramophone record provided with an insert piece so as to make the combination of record and insert piece suitable for being clamped on a gramophone turntable.
  • the insert piece snap-fits into the central hole of the record and is to that end provided with slots. These slots, however, extend from the outer peripheral wall of the insert piece in a radially inward direction.
  • the invention provides an information carrier of the type described, which is characterised in that said information carrier is made of a stiff material by injection moulding and in that the insert piece consists of an axially slotted hollow cylindrical body having at one end a closed flange and at its other end a radially outwardly extending peripheral rib segmented by the axial slots, said axial slots extending partially into the flange from its inside edge in an outward direction and the rib segments forming together with the flange a gripping channel such that the insert piece snap-fits into the information carrier.
  • the invention also allows press moulding by means of other techniques, e.g. using a ring of small injection openings around a bore.
  • This technique is known as "refuse-free moulding".
  • the insert piece can cover the injection points, so that one can use the refuse-less injection method. It will be clear that such a method has the advantage of using less material.
  • the insert piece may have a symmetrical construction.
  • the insert piece comprises two parts, the one of which is brought through the bore present in the information carrier from the one side and the other of which from the other side.
  • Fig. 1 shows an information carrier 1, e.g. a compact-disc, that can be carried and during operation rotatably driven by means of a central driving spindle 2, and a support edge 3 coupled therewith.
  • the driving spindle 2 exhibits a stepwise structure having two conically tapering circumferential surfaces 4, 5, for searching and centering the information carrier 1.
  • the information carrier 1 is provided with a central bore 6, in which an insert piece 7 is positioned.
  • This insert piece 7 is provided with a central bore 8, the diameter of which corresponds exactly with the diameter of the lower part 8 of spindle 2.
  • the insert piece 7 exhibits a ring of six resilient locking edges 9, by means of which the insert piece 7 can be pressed into the bore 6 of the information carrier 1, whilst pressing inwardly the locking edges 9, which after having passed the bore in outward direction to form a strong coupling between the insert piece 7 and the information carrier 1 together with a flange edge 10 positioned at the other side.
  • Locking edges 9 are provided with conical searching edges 20 at their edge zones of their upper surfaces extending in outward direction.
  • the central bore 8 was, up to now, the diameter of the central bore in information carrier 1.
  • the information carrier 1 has to be provided with a bore having a larger diameter in connection with the thickness at both sides of the generally cylinder-shaped vertical wall part 11 of the insert piece 7.
  • Fig. 2 shows an insert piece consisting of two identical parts 21 and provided with the same locking edges as shown in fig. 1, in which, however, each part 21 is provided with only three equidistant locking edges 9, leaving free intermediate zones 22 which extend over a somewhat larger angle than the locking edges 9 in such a way, that a locking edge of the one part 21 fits in the free zone of the other element.
  • the one part 21 can lockingly be coupled with the information carrier 12 according to fig. 1 and in a next-following step the other part 21 can be coupled with that information carrier 12.

Landscapes

  • Packaging For Recording Disks (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Automatic Disk Changers (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Claims (4)

  1. Runder plattenförmiger Informationsträger (1) mit einer Mittelöffnung (6), in Kombination mit einem Einsatzstück, das einen allgemein zylindrischen Abschnitt aufweist, der sich durch die Bohrung (6) erstreckt und im wesentlichen mit der gesamten Innenkante der Bohrung (6) in Berührung steht, wobei die Kombination (1, 7) in einem Aufzeichnungs- und/oder Wiedergabegerät mit Hilfe von Antriebseinrichtungen in Drehung versetzbar ist, die eine Spindel (2) aufweisen, auf die der Informationsträger (1) aufgeklemmt wird, wobei die Spindel (2) mit engem Sitz in eine Bohrung in dem Einsatzstück (7) paßt,
    dadurch gekennzeichnet, daß der Informationsträger (1) durch Spritzgußformung aus einem steifen Material hergestellt ist und daß das Einsatzstück (7) aus einem in Axialrichtung geschlitzten hohlzylindrischen Körper besteht, der an einem Ende einen geschlossenen Flansch (10) und an seinem anderen Ende eine sich in Radialrichtung nach außen erstreckende Umfangsrippe (9) aufweist, die durch die axialen Schlitze in Segmente unterteilt ist, wobei sich die axialen Schlitze teilweise in den Flansch von dessen Innenrand in einer nach außen gerichteten Richtung erstrecken und die Rippensegmente (9) zusammen mit dem Flansch (10) einen Greiferkanal derart bilden, daß das Einsatzstück (7) in den Informationsträger einrastbar ist.
  2. Informationsträger nach Anspruch 1,
    dadurch gekennzeichnet, daß das Einsatzstück (7) zwei Teile (14, 14) umfaßt, von denen einer durch die in dem Informationsträger (1) vorhandene Öffnung (6) von einer Seite aus eingebracht wird, während der andere Teil von der anderen Seite eingebracht wird.
  3. Informationsträger nach Anspruch 2,
    dadurch gekennzeichnet, daß beide Teile (21, 21) identisch sind.
  4. Einsatzstück als Teil der Kombination gemäß einem der vorhergehenden Ansprüche.
EP86202331A 1985-12-24 1986-12-18 Plattenförmiger Informationsträger mit einem Einsatzstück das ein zentrales Loch besitzt Expired - Lifetime EP0230695B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86202331T ATE70140T1 (de) 1985-12-24 1986-12-18 Plattenfoermiger informationstraeger mit einem einsatzstueck das ein zentrales loch besitzt.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8503563A NL8503563A (nl) 1985-12-24 1985-12-24 Schijfvormige informatiedrager met van een centraal gat voorzien inzetstuk.
NL8503563 1985-12-24

Publications (3)

Publication Number Publication Date
EP0230695A1 EP0230695A1 (de) 1987-08-05
EP0230695B1 EP0230695B1 (de) 1991-12-04
EP0230695B2 true EP0230695B2 (de) 1995-03-29

Family

ID=19847069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86202331A Expired - Lifetime EP0230695B2 (de) 1985-12-24 1986-12-18 Plattenförmiger Informationsträger mit einem Einsatzstück das ein zentrales Loch besitzt

Country Status (4)

Country Link
EP (1) EP0230695B2 (de)
AT (1) ATE70140T1 (de)
DE (1) DE3682759D1 (de)
NL (1) NL8503563A (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1320569C (en) * 1986-12-01 1993-07-20 Hendrikus W.C.M. Peeters Optically readable disk with self centering hub
US5448547A (en) * 1987-12-01 1995-09-05 Mitsui Petrochemical Industries, Ltd. Information recording discs
JPH0731422Y2 (ja) * 1987-12-01 1995-07-19 三井石油化学工業株式会社 光ディスク
US5068065A (en) * 1990-07-31 1991-11-26 Galic Maus Ventures Faster cycling sprue method and apparatus for injection molding plastic optical disks
CH686538A5 (fr) * 1992-05-15 1996-04-15 Cd Plant Tecval S A Cassette a disque.
US5768253A (en) * 1992-05-15 1998-06-16 Cd Plant Tecval S.A. Disc cartridge for accommodating recording discs
US6333833B1 (en) * 1994-07-14 2001-12-25 Nomai S.A. Hard disk platter assembly with plastic hub for use in a removable cartridge
WO2004013856A1 (ja) * 2002-08-06 2004-02-12 Matsushita Electric Industrial Co., Ltd. 光ディスク媒体及びハブ
US9117863B1 (en) 2013-05-16 2015-08-25 Seagate Technology Llc Cassette configurations to support platters having different diameters

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB840783A (en) * 1957-12-10 1960-07-13 Grammophon Ges Mit Beschraenkt Improvements in or relating to adapters for gramophone records
US3729720A (en) * 1971-06-18 1973-04-24 Ibm Turntable for rigidly mounting thin flexible magnetic discs
US4149207A (en) * 1977-10-25 1979-04-10 International Business Machines Corporation Cartridge and flexible magnetic disk assembly
US4159494A (en) * 1978-06-08 1979-06-26 International Business Machines Corporation Flexible disk in reversible cartridge
AU544979B2 (en) * 1981-06-19 1985-06-27 Matsushita Electric Industrial Co., Ltd. Information disk cartridge
DE3363461D1 (en) * 1982-02-10 1986-06-19 Hitachi Maxell Magnetic recording disc cartridge
JPS58224479A (ja) * 1982-06-21 1983-12-26 Hitachi Ltd 回転ディスク
JPS5914167U (ja) * 1982-07-16 1984-01-28 富士写真フイルム株式会社 磁気デイスクカ−トリツジ
DE3378389D1 (en) * 1982-08-05 1988-12-08 Hitachi Maxell Recording disc cartridge
US4562505A (en) * 1982-12-20 1985-12-31 Verbatim Corporation Flexible magnetic memory disk with metallic hub and method of manufacturing same
US4542426A (en) * 1983-05-31 1985-09-17 Storage Technology Partners Ii Flexible hub for removable disk
JPS6047279A (ja) * 1983-08-24 1985-03-14 Hitachi Maxell Ltd デイスクカ−トリツジ
JPS6085783U (ja) * 1983-11-16 1985-06-13 富士写真フイルム株式会社 磁気デイスクカ−トリツジ

Also Published As

Publication number Publication date
ATE70140T1 (de) 1991-12-15
EP0230695A1 (de) 1987-08-05
DE3682759D1 (de) 1992-01-16
EP0230695B1 (de) 1991-12-04
NL8503563A (nl) 1987-07-16

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